portmapper: minor linting fix, and comment purpose of newProxy variable
portmapper: minor linting fix, and comment purpose of newProxy variable

Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

moby/moby,trebonian/docker,djs55/docker,thaJeztah/docker,jimjag/docker,Ramzec/docker,jthelin/docker,trebonian/docker,moul/docker,flavio/docker,cpuguy83/docker,Ramzec/docker,djs55/docker,konstruktoid/docker-upstream,jameszhan/docker,bearstech/moby,trebonian/docker,bearstech/moby,docker/docker,docker/docker,docker/docker,mahak/docker,konstruktoid/docker-upstream,moul/docker,moby/moby,Mokolea/docker,Mokolea/docker,paralin/docker,paralin/docker,nalind/docker,jameszhan/docker,flavio/docker,yosifkit/docker,bearstech/moby,vdemeester/docker,yosifkit/docker,Ramzec/docker,jimjag/docker,Mokolea/docker,konstruktoid/docker-upstream,Mokolea/docker,vdemeester/docker,yosifkit/docker,cpuguy83/docker,yosifkit/docker,gnailuy/docker,nalind/docker,nawawi/docker,jameszhan/docker,jimjag/docker,nawawi/docker,konstruktoid/docker-upstream,paralin/docker,gnailuy/docker,Ramzec/docker,gnailuy/docker,moul/docker,nawawi/docker,trebonian/docker,mahak/docker,flavio/docker,cpuguy83/docker,jimjag/docker,jthelin/docker,thaJeztah/docker,thaJeztah/docker,vdemeester/docker,moby/moby,mahak/docker,nalind/docker,djs55/docker,bearstech/moby,gnailuy/docker,mahak/docker,moul/docker,flavio/docker,nalind/docker,thaJeztah/docker,paralin/docker,nawawi/docker,cpuguy83/docker,moby/moby